ASoC: qcom: add display port module support.

Merge series from Srinivas Kandagatla <srinivas.kandagatla@linaro.org>:

This patchset adds support to displayport on AudioReach.
Patches are tested on X13s with two display ports.

include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h

@@ -131,6 +131,14 @@
 #define RX_CODEC_DMA_RX_7	126
 #define QUINARY_MI2S_RX		127
 #define QUINARY_MI2S_TX		128
+#define DISPLAY_PORT_RX_0	DISPLAY_PORT_RX
+#define DISPLAY_PORT_RX_1	129
+#define DISPLAY_PORT_RX_2	130
+#define DISPLAY_PORT_RX_3	131
+#define DISPLAY_PORT_RX_4	132
+#define DISPLAY_PORT_RX_5	133
+#define DISPLAY_PORT_RX_6	134
+#define DISPLAY_PORT_RX_7	135
 
 #define LPASS_CLK_ID_PRI_MI2S_IBIT	1
 #define LPASS_CLK_ID_PRI_MI2S_EBIT	2

sound/soc/qcom/qdsp6/audioreach.c

@@ -196,6 +196,12 @@ struct apm_codec_dma_module_intf_cfg {
 
 #define APM_CDMA_INTF_CFG_PSIZE ALIGN(sizeof(struct apm_codec_dma_module_intf_cfg), 8)
 
+struct apm_display_port_module_intf_cfg {
+	struct apm_module_param_data param_data;
+	struct param_id_display_port_intf_cfg cfg;
+} __packed;
+#define APM_DP_INTF_CFG_PSIZE ALIGN(sizeof(struct apm_display_port_module_intf_cfg), 8)
+
 static void *__audioreach_alloc_pkt(int payload_size, uint32_t opcode, uint32_t token,
 				    uint32_t src_port, uint32_t dest_port, bool has_cmd_hdr)
 {
@@ -582,6 +588,72 @@ int audioreach_graph_send_cmd_sync(struct q6apm_graph *graph, struct gpr_pkt *pk
 }
 EXPORT_SYMBOL_GPL(audioreach_graph_send_cmd_sync);
 
+static int audioreach_display_port_set_media_format(struct q6apm_graph *graph,
+						    struct audioreach_module *module,
+						    struct audioreach_module_config *cfg)
+{
+	struct apm_display_port_module_intf_cfg *intf_cfg;
+	struct apm_module_frame_size_factor_cfg *fs_cfg;
+	struct apm_module_param_data *param_data;
+	struct apm_module_hw_ep_mf_cfg *hw_cfg;
+	int ic_sz, ep_sz, fs_sz, dl_sz;
+	int rc, payload_size;
+	struct gpr_pkt *pkt;
+	void *p;
+
+	ic_sz = APM_DP_INTF_CFG_PSIZE;
+	ep_sz = APM_HW_EP_CFG_PSIZE;
+	fs_sz = APM_FS_CFG_PSIZE;
+	dl_sz = 0;
+
+	payload_size = ic_sz + ep_sz + fs_sz + dl_sz;
+
+	pkt = audioreach_alloc_apm_cmd_pkt(payload_size, APM_CMD_SET_CFG, 0);
+	if (IS_ERR(pkt))
+		return PTR_ERR(pkt);
+
+	p = (void *)pkt + GPR_HDR_SIZE + APM_CMD_HDR_SIZE;
+
+	hw_cfg = p;
+	param_data = &hw_cfg->param_data;
+	param_data->module_instance_id = module->instance_id;
+	param_data->error_code = 0;
+	param_data->param_id = PARAM_ID_HW_EP_MF_CFG;
+	param_data->param_size = ep_sz - APM_MODULE_PARAM_DATA_SIZE;
+
+	hw_cfg->mf.sample_rate = cfg->sample_rate;
+	hw_cfg->mf.bit_width = cfg->bit_width;
+	hw_cfg->mf.num_channels = cfg->num_channels;
+	hw_cfg->mf.data_format = module->data_format;
+	p += ep_sz;
+
+	fs_cfg = p;
+	param_data = &fs_cfg->param_data;
+	param_data->module_instance_id = module->instance_id;
+	param_data->error_code = 0;
+	param_data->param_id = PARAM_ID_HW_EP_FRAME_SIZE_FACTOR;
+	param_data->param_size = fs_sz - APM_MODULE_PARAM_DATA_SIZE;
+	fs_cfg->frame_size_factor = 1;
+	p += fs_sz;
+
+	intf_cfg = p;
+	param_data = &intf_cfg->param_data;
+	param_data->module_instance_id = module->instance_id;
+	param_data->error_code = 0;
+	param_data->param_id = PARAM_ID_DISPLAY_PORT_INTF_CFG;
+	param_data->param_size = ic_sz - APM_MODULE_PARAM_DATA_SIZE;
+
+	intf_cfg->cfg.channel_allocation = cfg->channel_allocation;
+	intf_cfg->cfg.mst_idx = 0;
+	intf_cfg->cfg.dptx_idx = cfg->dp_idx;
+
+	rc = q6apm_send_cmd_sync(graph->apm, pkt, 0);
+
+	kfree(pkt);
+
+	return rc;
+}
+
 /* LPASS Codec DMA port Module Media Format Setup */
 static int audioreach_codec_dma_set_media_format(struct q6apm_graph *graph,
 						 struct audioreach_module *module,
@@ -1122,6 +1194,9 @@ int audioreach_set_media_format(struct q6apm_graph *graph, struct audioreach_mod
 	case MODULE_ID_PCM_CNV:
 		rc = audioreach_pcm_set_media_format(graph, module, cfg);
 		break;
+	case MODULE_ID_DISPLAY_PORT_SINK:
+		rc = audioreach_display_port_set_media_format(graph, module, cfg);
+		break;
 	case MODULE_ID_I2S_SOURCE:
 	case MODULE_ID_I2S_SINK:
 		rc = audioreach_i2s_set_media_format(graph, module, cfg);

sound/soc/qcom/qdsp6/audioreach.h

@@ -22,6 +22,7 @@ struct q6apm_graph;
 #define MODULE_ID_I2S_SINK		0x0700100A
 #define MODULE_ID_I2S_SOURCE		0x0700100B
 #define MODULE_ID_DATA_LOGGING		0x0700101A
+#define MODULE_ID_DISPLAY_PORT_SINK	0x07001069
 
 #define APM_CMD_GET_SPF_STATE		0x01001021
 #define APM_CMD_RSP_GET_SPF_STATE	0x02001007
@@ -444,6 +445,15 @@ struct param_id_i2s_intf_cfg {
 #define PORT_ID_I2S_OUPUT		1
 #define I2S_STACK_SIZE			2048
 
+#define PARAM_ID_DISPLAY_PORT_INTF_CFG		0x08001154
+
+struct param_id_display_port_intf_cfg {
+	uint32_t channel_allocation;
+	/* Multi-Steam Transport index */
+	uint32_t mst_idx;
+	uint32_t dptx_idx;
+} __packed;
+
 #define PARAM_ID_HW_EP_MF_CFG			0x08001017
 struct param_id_hw_ep_mf {
 	uint32_t sample_rate;
@@ -702,6 +712,8 @@ struct audioreach_module_config {
 	u16	data_format;
 	u16	num_channels;
 	u16	active_channels_mask;
+	u16	dp_idx;
+	u32	channel_allocation;
 	u32	sd_line_mask;
 	int	fmt;
 	u8 channel_map[AR_PCM_MAX_NUM_CHANNEL];

sound/soc/qcom/qdsp6/q6afe-dai.c

@@ -12,6 +12,7 @@
 #include <sound/soc.h>
 #include <sound/pcm_params.h>
 #include "q6dsp-lpass-ports.h"
+#include "q6dsp-common.h"
 #include "q6afe.h"
 
 
@@ -69,6 +70,7 @@ static int q6hdmi_hw_params(struct snd_pcm_substream *substream,
 	struct q6afe_dai_data *dai_data = dev_get_drvdata(dai->dev);
 	int channels = params_channels(params);
 	struct q6afe_hdmi_cfg *hdmi = &dai_data->port_config[dai->id].hdmi;
+	int ret;
 
 	hdmi->sample_rate = params_rate(params);
 	switch (params_format(params)) {
@@ -80,33 +82,11 @@ static int q6hdmi_hw_params(struct snd_pcm_substream *substream,
 		break;
 	}
 
-	/* HDMI spec CEA-861-E: Table 28 Audio InfoFrame Data Byte 4 */
-	switch (channels) {
-	case 2:
-		hdmi->channel_allocation = 0;
-		break;
-	case 3:
-		hdmi->channel_allocation = 0x02;
-		break;
-	case 4:
-		hdmi->channel_allocation = 0x06;
-		break;
-	case 5:
-		hdmi->channel_allocation = 0x0A;
-		break;
-	case 6:
-		hdmi->channel_allocation = 0x0B;
-		break;
-	case 7:
-		hdmi->channel_allocation = 0x12;
-		break;
-	case 8:
-		hdmi->channel_allocation = 0x13;
-		break;
-	default:
-		dev_err(dai->dev, "invalid Channels = %u\n", channels);
-		return -EINVAL;
-	}
+	ret = q6dsp_get_channel_allocation(channels);
+	if (ret < 0)
+		return ret;
+
+	hdmi->channel_allocation = (u16) ret;
 
 	return 0;
 }

sound/soc/qcom/qdsp6/q6apm-lpass-dais.c

@@ -11,6 +11,7 @@
 #include <sound/soc.h>
 #include <sound/pcm_params.h>
 #include "q6dsp-lpass-ports.h"
+#include "q6dsp-common.h"
 #include "audioreach.h"
 #include "q6apm.h"
 
@@ -91,6 +92,36 @@ static int q6dma_set_channel_map(struct snd_soc_dai *dai,
 	return 0;
 }
 
+static int q6hdmi_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+	struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
+	struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
+	int channels = params_channels(params);
+	int ret;
+
+	cfg->bit_width = params_width(params);
+	cfg->sample_rate = params_rate(params);
+	cfg->num_channels = channels;
+
+	switch (dai->id) {
+	case DISPLAY_PORT_RX_0:
+		cfg->dp_idx = 0;
+		break;
+	case DISPLAY_PORT_RX_1 ... DISPLAY_PORT_RX_7:
+		cfg->dp_idx = dai->id - DISPLAY_PORT_RX_1 + 1;
+		break;
+	}
+
+	ret = q6dsp_get_channel_allocation(channels);
+	if (ret < 0)
+		return ret;
+
+	cfg->channel_allocation = ret;
+
+	return 0;
+}
+
 static int q6dma_hw_params(struct snd_pcm_substream *substream,
 			   struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 {
@@ -215,6 +246,13 @@ static const struct snd_soc_dai_ops q6i2s_ops = {
 	.shutdown	= q6apm_lpass_dai_shutdown,
 	.set_channel_map  = q6dma_set_channel_map,
 	.hw_params        = q6dma_hw_params,
+};
+
+static const struct snd_soc_dai_ops q6hdmi_ops = {
+	.prepare	= q6apm_lpass_dai_prepare,
+	.startup	= q6apm_lpass_dai_startup,
+	.shutdown	= q6apm_lpass_dai_shutdown,
+	.hw_params	= q6hdmi_hw_params,
 	.set_fmt	= q6i2s_set_fmt,
 };
 
@@ -242,6 +280,7 @@ static int q6apm_lpass_dai_dev_probe(struct platform_device *pdev)
 	memset(&cfg, 0, sizeof(cfg));
 	cfg.q6i2s_ops = &q6i2s_ops;
 	cfg.q6dma_ops = &q6dma_ops;
+	cfg.q6hdmi_ops = &q6hdmi_ops;
 	dais = q6dsp_audio_ports_set_config(dev, &cfg, &num_dais);
 
 	return devm_snd_soc_register_component(dev, &q6apm_lpass_dai_component, dais, num_dais);

sound/soc/qcom/qdsp6/q6dsp-common.c

@@ -63,4 +63,39 @@ int q6dsp_map_channels(u8 ch_map[PCM_MAX_NUM_CHANNEL], int ch)
 	return 0;
 }
 EXPORT_SYMBOL_GPL(q6dsp_map_channels);
+
+int q6dsp_get_channel_allocation(int channels)
+{
+	int channel_allocation;
+
+	/* HDMI spec CEA-861-E: Table 28 Audio InfoFrame Data Byte 4 */
+	switch (channels) {
+	case 2:
+		channel_allocation = 0;
+		break;
+	case 3:
+		channel_allocation = 0x02;
+		break;
+	case 4:
+		channel_allocation = 0x06;
+		break;
+	case 5:
+		channel_allocation = 0x0A;
+		break;
+	case 6:
+		channel_allocation = 0x0B;
+		break;
+	case 7:
+		channel_allocation = 0x12;
+		break;
+	case 8:
+		channel_allocation = 0x13;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return channel_allocation;
+}
+EXPORT_SYMBOL_GPL(q6dsp_get_channel_allocation);
 MODULE_LICENSE("GPL v2");

sound/soc/qcom/qdsp6/q6dsp-common.h

@@ -20,5 +20,6 @@
 #define PCM_CHANNELS   10	/* Top surround channel. */
 
 int q6dsp_map_channels(u8 ch_map[PCM_MAX_NUM_CHANNEL], int ch);
+int q6dsp_get_channel_allocation(int channels);
 
 #endif /* __Q6DSP_COMMON_H__ */

sound/soc/qcom/qdsp6/q6dsp-lpass-ports.c

@@ -79,6 +79,22 @@
 		.id = did,						\
 	}
 
+#define Q6AFE_DP_RX_DAI(did) {						\
+		.playback = {						\
+			.stream_name = #did" Playback",			\
+			.rates = SNDRV_PCM_RATE_48000 |			\
+				SNDRV_PCM_RATE_96000 |			\
+				SNDRV_PCM_RATE_192000,			\
+			.formats = SNDRV_PCM_FMTBIT_S16_LE |		\
+				   SNDRV_PCM_FMTBIT_S24_LE,		\
+			.channels_min = 2,				\
+			.channels_max = 8,				\
+			.rate_min = 48000,				\
+			.rate_max = 192000,				\
+		},							\
+		.name = #did,						\
+		.id = did,						\
+	}
 
 static struct snd_soc_dai_driver q6dsp_audio_fe_dais[] = {
 	{
@@ -528,22 +544,14 @@ static struct snd_soc_dai_driver q6dsp_audio_fe_dais[] = {
 	Q6AFE_TDM_CAP_DAI("Quinary", 5, QUINARY_TDM_TX_5),
 	Q6AFE_TDM_CAP_DAI("Quinary", 6, QUINARY_TDM_TX_6),
 	Q6AFE_TDM_CAP_DAI("Quinary", 7, QUINARY_TDM_TX_7),
-	{
-		.playback = {
-			.stream_name = "Display Port Playback",
-			.rates = SNDRV_PCM_RATE_48000 |
-				 SNDRV_PCM_RATE_96000 |
-				 SNDRV_PCM_RATE_192000,
-			.formats = SNDRV_PCM_FMTBIT_S16_LE |
-				   SNDRV_PCM_FMTBIT_S24_LE,
-			.channels_min = 2,
-			.channels_max = 8,
-			.rate_max =     192000,
-			.rate_min =	48000,
-		},
-		.id = DISPLAY_PORT_RX,
-		.name = "DISPLAY_PORT",
-	},
+	Q6AFE_DP_RX_DAI(DISPLAY_PORT_RX_0),
+	Q6AFE_DP_RX_DAI(DISPLAY_PORT_RX_1),
+	Q6AFE_DP_RX_DAI(DISPLAY_PORT_RX_2),
+	Q6AFE_DP_RX_DAI(DISPLAY_PORT_RX_3),
+	Q6AFE_DP_RX_DAI(DISPLAY_PORT_RX_4),
+	Q6AFE_DP_RX_DAI(DISPLAY_PORT_RX_5),
+	Q6AFE_DP_RX_DAI(DISPLAY_PORT_RX_6),
+	Q6AFE_DP_RX_DAI(DISPLAY_PORT_RX_7),
 	Q6AFE_CDC_DMA_RX_DAI(WSA_CODEC_DMA_RX_0),
 	Q6AFE_CDC_DMA_TX_DAI(WSA_CODEC_DMA_TX_0),
 	Q6AFE_CDC_DMA_RX_DAI(WSA_CODEC_DMA_RX_1),
@@ -603,6 +611,9 @@ struct snd_soc_dai_driver *q6dsp_audio_ports_set_config(struct device *dev,
 		case DISPLAY_PORT_RX:
 			q6dsp_audio_fe_dais[i].ops = cfg->q6hdmi_ops;
 			break;
+		case DISPLAY_PORT_RX_1 ... DISPLAY_PORT_RX_7:
+			q6dsp_audio_fe_dais[i].ops = cfg->q6hdmi_ops;
+			break;
 		case SLIMBUS_0_RX ... SLIMBUS_6_TX:
 			q6dsp_audio_fe_dais[i].ops = cfg->q6slim_ops;
 			break;